Across
- 5. infection caused by bacteria, or fungi
- 7. passing of air in and out of the lungs
- 8. smaller tubular branches of the airways
- 12. gas that you breath in
- 15. process of letting air out
- 16. the act or process of breathing
- 17. tiny sacs in the lungs
- 19. gas that you breath out
- 20. passageways that lead air into the lungs
- 21. also called the throat or windpipe
- 22. gas goes from high to low concentration
- 23. parting of two nostrils
- 27. airways narrow and swell
- 28. the voice box
Down
- 1. cavity behind the nose and above the roof of the mouth
- 2. hairlike structures
- 3. process of air going into the lungs
- 4. two spongy organs that are responsible for respiration
- 6. invisible gas that surrounds the earth
- 9. the mouth, lips, cheeks
- 10. has nostrils and is above the mouth
- 11. protective secretion of the mucus
- 13. the flap that covers the trachea
- 14. breathe in
- 15. allows food to enter into the stomach
- 18. breathe out
- 22. between the neck and the abdomen
- 24. opening in the lower part of the human face
- 25. dome shaped muscle under the lungs
- 26. tube leading air to the bronchi